Friedetch clever and max clever



(No Modem- I'. & M.. CLBVBR.

Loox.

No. 555,209.- Patented Feb. 25, 1896.

AN DRE" B sRAnAM, Primo-UMD. WASNINGTUNYD C.

UNITED STATES PATENT OFFICE.

FRIEDRICH @LEVER AND MAX CLEVER, OF HAGEN, GERMANY.

LOCK.

SPECIFICATION forming part of Letters Patent No. 555,209, dated February 25, 1896.

Application filed July l0, 1895. Serial No. 555,454. (No model.)

To all whom it may concern:

Be it known that we, FRIEDRICH CLEvEr. and )IAX CLEvER, subjects of the King of Prussia, German Emperor, residing at Hagen, in the Kingdom of Prussia and German Exnpire, have invented cert-ain new and useful Improvements in Locks, of which the following is a specification. L

The invention consists in the novel combination of elements and the features and arrangements thereof hereinafter particularly described and pointed out in the claim.

The invention is illustrated in the accompanying drawings as applied to a one-revolution box-lock.

Figure l shows the inside of the lock, a part of the casing being removed, as shown in dott-ed lines. Figs. 2 and 3 show a top and a profile view of the covering partof the casing removed in Fig. l, the latter view representin g also a section through the tumblerbolt and the lock-casing on line tra; of Fig. l. Fig. 4: is a side view of the covering part. Fig. 5 is a view of the S-shaped tumblerspring. Fig. G is a view of the tumbler-plate.

Except as to the tumbler, which constitutes the subject-matter of the invention, the lock is arranged preciselyT as the ordinary box or mortise locks. It contains a bolt ce provided at its rear with a notch c, in whose indent c the tumbler-toe b of the tumbler-plate b engages, whereby the bolt is locked.

The S-shaped tumbler-spring d is placed loose upon the tumbler. It consists prefer` ably of a narrow strip of steel, bent in the shape of an S. The U-shaped piece of sheet covering metal h (shown in Figs. 2 and is put over the whole in such a manner that it assumes the position shown by dotted lines in Fig. l. It is held in this position by the pieces e which engage in corresponding holes e2 of the casing K.

The sheet-metal covering serves as a guide for the bolt, the latter slipping in a suitable notch l of the left side flange of the same. Said sheet-metal casing e serves also as a guide for the tumbler-plate b. As the same lies loose in the casing formed by the sheet metal it can move vertically. The play is limited by the height of the notch c. The tumblerspring d is merely held in position by the sheet-metal covering. It presses upon the tumbler-plate and keeps the tumbler-toe b engaged with the indent c' of the bolt-bar.

The lock works as follows: The key is introduced in the keyhole through the guideiron arranged upon the sheet-metal covering e. When the key is turned the bit will first strike the tumbler-plate b and press the same upward, whereby the tumbler-spring will be compressed vertically. The locking of the bolt will thereby be released as the tumblertoe b' will go out of the indent c and by a further turning of the key the bolt can freely be moved forward and backward.

In combination, the outer casing, the channel-covering e, having flanges with a notch in one of them, a sliding bolt passing through said notch and out of the main casing, said bolt having an opening C with an indent or spur c therein, a tumbler-plate arranged in the channel covering and guided by the flanges thereof to move at right angles to the bolt, said tumbler having the toe h fitting in the opening c to engage the indent c', and having also a bearing for the key to work against, and the spring held between the tumbler and the outer casing and between the il. nges of the channel-covering, substantially as described.

ln witness whereof we hereunto set our hands in. presence of two witnesses.

FRIEDRICH CLEVER. MAX CLEVER. W'itnesses:

WILLIAM EssENwEIN, A. STRAUSS. 

